'use strict';
const {
  Model
} = require('sequelize');
module.exports = (sequelize, DataTypes) => {
  class Category extends Model {
    /**
     * Helper method for defining associations.
     * This method is not a part of Sequelize lifecycle.
     * The `models/index` file will call this method automatically.
     */
    static associate(models) {
      // define association here
    }
  }
  Category.init({
    name: {
      type:"DataTypes.STRING",
      allowNull:false,
      // unique:{msg:'名称已存在，请选择其他名称。'},
      validate:{
        notNull:{msg:"名称必须填写。"},
        notEmpty:{msg:"名称不能为空"},
        len:{args:[2,45],msg:"长度必须是2~45之间。"},
        async isUnique(value){
          const name = await User.findOne({where:{name:value}})
          if (name){
            throw new Error("名称已存在，请选择其他名称。");
            
          }
        }
      }
    },
    rank: {
      type:"DataTypes.INTEGER",
      allowNull:false,
      validate:{
        notNull:{msg:"排序必须填写。"},
        notEmpty:{msg:"排序不能为空。"},
        isInt:{msg:"排序必须为整数。"},
        isPositive(value){
          if(value<=0){
            throw new Error('排序必须是正整数。')
          }
        }
      }
    }
  }, {
    sequelize,
    modelName: 'Category',
  });
  return Category;
};